qpropertyeditor_delegate.cpp

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#include "qpropertyeditor_delegate_p.h"
#include "qpropertyeditor_model_p.h"
#include "textpropertyeditor_p.h"
#include <iconloader_p.h>

#include <QtGui/QPainter>
#include <QtGui/QKeyEvent>
#include <QtGui/QApplication>
#include <QtGui/QToolButton>
#include <QtGui/QHBoxLayout>

#include <QtCore/qdebug.h>
#include <private/qfont_p.h>

namespace qdesigner_internal {

class EditorWithReset : public QWidget
{
    Q_OBJECT
public:
    EditorWithReset(const IProperty *property, QPropertyEditorModel *model, QWidget *parent = 0);
    void setChildEditor(QWidget *child_editor);
    QWidget *childEditor() const { return m_child_editor; }
private slots:
    void emitResetProperty();
signals:
    void sync();
    void resetProperty(const IProperty *property, QPropertyEditorModel *model);
private:
    QWidget *m_child_editor;
    QHBoxLayout *m_layout;
    const IProperty *m_property;
    QPropertyEditorModel *m_model;
};

EditorWithReset::EditorWithReset(const IProperty *property, QPropertyEditorModel *model, QWidget *parent)
    : QWidget(parent)
{
    setAutoFillBackground(true);
    m_property = property;
    m_child_editor = 0;
    m_layout = new QHBoxLayout(this);
    m_layout->setMargin(0);
    m_layout->setSpacing(0);
    m_model = model;

    QToolButton *button = new QToolButton(this);
    button->setToolButtonStyle(Qt::ToolButtonIconOnly);
    button->setIcon(createIconSet(QLatin1String("resetproperty.png")));
    button->setIconSize(QSize(8,8));
    button->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::MinimumExpanding));
    m_layout->addWidget(button);
    connect(button, SIGNAL(clicked()), this, SLOT(emitResetProperty()));
}

void EditorWithReset::emitResetProperty()
{
    emit resetProperty(m_property, m_model);
}

void EditorWithReset::setChildEditor(QWidget *child_editor)
{
    m_child_editor = child_editor;

    m_child_editor->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::MinimumExpanding));
    m_layout->insertWidget(0, m_child_editor);
    setFocusProxy(m_child_editor);
}

QPropertyEditorDelegate::QPropertyEditorDelegate(QObject *parent)
    : QItemDelegate(parent),
      m_readOnly(false),
      m_syncing(false),
      m_lastEdited(0)
{
}

QPropertyEditorDelegate::~QPropertyEditorDelegate()
{
}

bool QPropertyEditorDelegate::eventFilter(QObject *object, QEvent *event)
{
    QWidget *editor = qobject_cast<QWidget*>(object);
    if (editor && qobject_cast<TextPropertyEditor*>(editor->parent()))
        editor = editor->parentWidget();
    if (editor && qobject_cast<EditorWithReset*>(editor->parent()))
        editor = editor->parentWidget();

    switch (event->type()) {
        case QEvent::KeyPress:
        case QEvent::KeyRelease: {
            QKeyEvent *ke = static_cast<QKeyEvent*>(event);
            if (!(ke->modifiers() & Qt::ControlModifier)
                && (ke->key() == Qt::Key_Up || ke->key() == Qt::Key_Down)) {
                event->ignore();
                return true;
            }
            if (object->metaObject()->className() == QLatin1String("QtKeySequenceEdit")) {
                event->ignore();
                return false;
            }
        } break;

        case QEvent::FocusOut:
            if (!editor->isActiveWindow() || (QApplication::focusWidget() != editor)) {
                QWidget *w = QApplication::focusWidget();
                while (w) { // do not worry about focus changes internally in the editor
                    if (w == editor)
                        return false;
                    w = w->parentWidget();
                }

                emit commitData(editor);
            }
            return false;

        default:
            break;
    }

    return QItemDelegate::eventFilter(editor ? editor : object, event);
}

void QPropertyEditorDelegate::paint(QPainter *painter, const QStyleOptionViewItem &opt, const QModelIndex &index) const
{
    QStyleOptionViewItem option = opt;

    const QAbstractItemModel *model = index.model();
    IProperty *property = static_cast<const QPropertyEditorModel*>(model)->privateData(index);
    if (index.column() == 0 && property && property->changed()) {
        option.font.setBold(true);
    }

    if (property && property->isSeparator()) {
        option.palette.setColor(QPalette::Text, option.palette.color(QPalette::BrightText));
        option.font.setBold(true);
        option.state &= ~QStyle::State_Selected;
    }

    if (index.column() == 1) {
        option.state &= ~QStyle::State_Selected;
    }

    option.state &= ~QStyle::State_HasFocus;

    if (property && property->isSeparator()) {
        const QBrush bg = option.palette.dark();
        painter->fillRect(option.rect, bg);
    }

    const QPen savedPen = painter->pen();

    QItemDelegate::paint(painter, option, index);

    const QColor color = static_cast<QRgb>(QApplication::style()->styleHint(QStyle::SH_Table_GridLineColor, &option));
    painter->setPen(QPen(color));
    if (index.column() == 1 || !(property && property->isSeparator())) {
        const int right = (option.direction == Qt::LeftToRight) ? option.rect.right() : option.rect.left();
        painter->drawLine(right, option.rect.y(), right, option.rect.bottom());
    }
    painter->drawLine(option.rect.x(), option.rect.bottom(),
            option.rect.right(), option.rect.bottom());